Facial pack and bathing compositions based on Hwangto (Korean loess) and preparation thereof

ABSTRACT

Disclosed are a facial pack composition and a bathing composition based on loess, and methods for preparing the same. The bathing composition makes a user feel refreshed, prevents arteriosclerosis and fat accumulation in human bodies, is useful for the treatment of maturating diseases such as dermatophytosis and dermatitis and stimulates metabolism and blood circulation system of the human body. Additionally, the facial pack includes loess having a fine particle size sufficient to avoid skin irritation and thus does not adversely affect the skin even if the user uses the pack everyday. The loess is pretreated by a unique aging method and selected additives, so that the far infrared ray-emitting effect of the loess can be maximized. Therefore, it provides skin health-aid and cosmetic effects. Further, the bathing composition is an environmental-friendly composition because the loess-containing water discharged after bathing flows into a draining path, thereby purifying a contaminated river and recovering contaminated soil.

RELATED APPLICATIONS

This application is a Division of currently pending application U.S.Ser. No. 10/965,883, entitled “FACIAL PACK AND BATHING COMPOSITIONSBASED ON HWANGTO (KOREAN LOESS) AND PREPARATION METHOD” and filed onOct. 18, 2004.

BACKGROUND OF THE INVENTION FIELD OF THE INVENTION

The present invention relates to a facial pack composition and a bathingcomposition based on Korean loess, and methods for preparing the same.

In the present invention, by Korean loess it means one produced in SouthKorea and is also referred to as “Hwangto”.

More particularly, the loess used in the present invention is obtainedby pulverizing loess which is completely sun-dried into a size of200–250 mesh; introducing the pulverized loess in an earthenwarecontainer together with pine tree charcoal, a paulownia wood material,alum and ginkgo leaves; sealing the earthenware container; and aging thematerials at a temperature of −5 to 40° C. for 1 month to 6 months. Thebathing composition including the loess obtained as described above hasadvantages in that it makes a user feel refreshed; it can preventarteriosclerosis and fat accumulation in the human body; it is usefulfor the treatment of maturating diseases such as dermatophytosis anddermatitis; and in that it stimulates metabolism and blood circulationsystem. Additionally, according to the present invention, the facialpack includes loess having a fine particle size sufficient to avoid skinirritation, and thus does not adversely affect the skin even if the useruses the pack everyday. The loess used in the present invention ispretreated by a unique aging method and selected additives, so that thefar infrared ray-emitting effect of loess can be maximized. Therefore,it provides skin health-aid and cosmetic effects. Further, the bathingcomposition according to the present invention is characterized by thefact that it is an environmental-friendly composition, because theloess-containing water discharged after bathing flows into a drainingpath, thereby purifying a contaminated river and recovering contaminatedsoil. Meanwhile, the loess-containing composition according to thepresent invention may further comprise functional additives such asnatural bay salt, extraction essence of pine buds, etc.

DESCRIPTION OF THE PRIOR ART

As generally known in the art, a conventional bathing preparation isprepared by combining a fragrant agent, a coloring agent, botanicalaroma, an organic acid, etc. with a mixture composed of a salt cake suchas crystalline sodium sulfonate, boric acid including sodium borate, aninorganic salt such as a carbonate and sulfur. Such conventional bathingpreparations are used for the purpose of manifesting fragrance andcolors to bathing water, and stimulating skin and blood circulationadequately, thereby promoting recovery from fatigue and stimulatingmetabolism.

Meanwhile, spas scattered in various regions in Korea are classifiedinto radioactive spas, sulfur spas, acidic spas, etc., according to thecharacteristics of their water veins and qualities and their mineralcontents. Such spas are used as cold spas and hot spas and are usefulfor the treatment of various diseases. As described above, spas havevarious functions and characteristics and thus consumers have to travelinconveniently from place to place in order to use a spa conformed to adesired purpose. To solve this inconvenience, the present inventionprovides a bathing composition including loess and/or extraction essenceof pine leaves and natural salt so as to make consumers enjoy a “medicalbath” with ease in their homes. The aforementioned constitutionalelements and contents thereof including effects obtained thereby haveremained undiscovered heretofore.

Meanwhile, with regard to a facial pack containing loess, cosmeticscontaining loess are described in U.S. Pat. No. 6,254,858 and KoreaPatent Laid-Open No. 1999-0086959. However, the cosmetics according tothe prior art are merely characterized by comprising loess. Moreover,there is no description with reference to the loess pre-treated by aunique method according to the present invention. Particularly,conventional cosmetics containing loess merely treated by the steps ofwashing, heating and particle selection cannot provide excellent effectsof loess to the skin of a user. Therefore, such conventional cosmeticshave no special effect.

SUMMARY OF THE INVENTION

Most conventional bubble type bathing preparations include alkalinecarbonates, and thus carbon dioxide gas generated as bubbles in waterare not completely decomposed nut are volatilized in the air. Therefore,such conventional bathing preparations have only sensual functions.Moreover, fragrance added to the bathing preparations has greatvolatility, and thus evaporates according to the occurrence of expansionof carbon dioxide gas. Therefore, the effects of fragrance itself cannotbe exploited satisfactorily. Additionally, because a bathingpreparation, as it is, is a kind of surfactant, it may causeenvironmental pollution when discharged into a draining path afterbathing. Accordingly, the present invention has been made to solve theabove-mentioned problems occurring in the prior art and an object of thepresent invention is to provide a bathing composition including naturalmaterials by combining each of constitutional elements in such an amountthat the effect of each element can be maximized. The bathingcomposition according to the present invention can greatly satisfy theusers during and after bathing.

Additionally, the facial pack according to the present invention usingloess pre-treated by a unique process can solve the problem of skinirritation occurring in the prior art. The facial pack according to thepresent invention has an additional effect of skin softening. Further,it is useful for the treatment of facial skin diseases, etc.

In order to accomplish this object, there is provided a bathingcomposition obtained by preparing loess powder and/or natural salt, andextraction essence of pine buds (referred as constitutional elements ofthe bathing composition according to the present invention),individually and mixing them in a predetermined ratio. The bathingcomposition of the present invention takes the form of powder to beadded in a predetermined amount to a bathtub for bathing. Because eachof the constitutional elements of the present invention is preparedindividually, each element can form an individual invention and only apart of the constitutional elements of the present invention can beadded to a bathtub for bathing. Additionally, the facial packcomposition according to the present invention is formed of loess powderand/or natural salt and extraction essence of pine buds. Particularly,the loess used in the facial pack composition is thoroughly pre-treatedso as to obtain the maximized effect of loess.

Hereinafter, each of the constitutional elements of the cosmetic andbathing compositions will be explained in detail.

Loess Powder

The present invention is characterized by pre-treatment process ofloess. In other words, the technical gist of the present invention isthat loess pre-treated by a unique process is used in a facial pack or abathing composition.

Preferably, loess of good quality that exists at a depth of 90 cm orless from the surface is used. Loess is a silicon-containing mineralsubstance subjected to sunlight energy for a long duration and ischaracterized by emitting far infrared rays and anions. Additionally, itstimulates metabolism by the effect of active yeasts and is useful forthe prevention of aging and adult diseases. Loess includes fine sand anda great amount of calcium carbonate, is not brittle, has a highviscosity and is transformed into clay when kneaded with water. In aspoon of loess, about 200 millions of microorganisms live and variousenzymes circulate. Therefore, loess has been known as a living bodysince early times.

Loess emits a great amount of far infrared rays and includes beneficialenzymes such as a catalase, diphenol oxydase, saccharase and protease,wherein the enzymes can remove toxins, give degradability, act like afertilizer and purify soil.

When a human body shows aging phenomena according to the occurrence ofoxidized lipid toxins during the metabolic process, the catalase, whichis a microorganism present in loess, can neutralize and dilute thetoxins, thereby preventing skin aging. The protease hydrolyzes proteinsinto amino acids when nitrogen in the proteins is mineralized, and thusdecomposes and breaks a carcinoma, a tumor and other pathogens anddetoxifies a purulent wound and body toxins.

The loess powder used in the present invention is prepared as follows.

In a designated loess production source location, soil on the surface isremoved and loess of good quality that exists in a depth of 90 cm orless from the surface is collected. The collected loess is pulverized ina pulverizer. In order to remove toxins, the pulverized loess powder isdistributed on a floor in a thin and uniform state and then is naturallydried. The dried loess powder is introduced into a loess-producingmachine to remove foreign materials such as stones, and then the loessis further dried by heating with sunlight. Such a natural drying methodis different from a conventional drying method in the prior art thatuses a mechanical heating means. Next, the naturally dried loess isfurther introduced into a loess powder-producing machine to remove fineforeign materials and to obtain fine powder. The fine powder of loess isnaturally dried by heating with sunlight and then is introduced into apulverizer to produce powder having a main particle size of 150–200mesh. The loess powder having such a size may be used in a bathingcomposition. Further, the loess powder is introduced again into apulverizer to produce powder having a main particle size of 250–1,000mesh, more preferably about 1000 mesh, the powder being used in a facialpack that is a cosmetic composition according to the present invention.Then, such dried loess powder is aged. In the aging step, dried loesspowder is introduced into an earthenware container and the earthenwarecontainer is sealed to perform aging for 1 month to 6 months. To theearthenware container, pine tree charcoal, a paulownia wood material,alum and ginkgo leaves, wrapped in a coarse gauze web, may further beadded. We have found that aging the loess for 4 weeks or more at −5° C.to 40° C. can remarkably improve the far infrared ray-emitting activityof loess. On the other hand, loess aged only for 1–2 weeks has been usedaccording to the prior art. By aging loess under the above-describedconditions, the loess used in the present invention acts as “livingloess” in contrast with loess according to the prior art, and thusprovides maximized functions of loess when used in the compositionaccording to the present invention.

Natural Salt

Salt used in the present invention is bay salt, which is prepared bydrawing seawater into a salt farm, heating and evaporating it withsunlight and concentrating into salt. This bay salt contains a greatamount of mineral substances, because seawater mixed with mud isevaporated by heating with sunlight while harmful substances is removedwith the wind. Distinguishing salt of good quality from salt of poorquality is done by the naked eye. Salt of good quality has square-shapedparticles obtained by being subjected to sunlight at high noon. Salt ofpoor quality has hexahedral particles obtained by being subjected to thewind at night, and thus is toxic. Salt used in the present invention isbay salt having square-shaped particles, which is detoxified, purifiedand finely divided by heating at a high temperature (1000° C.) for 1hour or more.

Only the salt freshly produced by using seawater of good quality on thesoil in a salt farm at a sunny day under a controlled water temperatureof 30° C. is used in the present invention. Natural bay salt has aproperty capable of degrading fats and oils. Natural salt acceleratesphysiological functions of skin and skin respiration, thereby actinglike a good soap, shampoo, rinse, treatment and lotion. Therefore, it ispossible to make skin care and hair care products having the bestquality. Additionally, natural salt is a supplementary substance fornatural hair-maintaining and hair-caring agents. Further, salt hasdetoxifying and sterilizing activities, and thus increases theresistance of a human body against attack of harmful matters or bacteriaso as to protect them from penetrating into cells and blood vessels. Thebay salt used in the present invention is prepared as follows. Seawatermixed with mud is evaporated under sunlight with the wind to obtain baysalt. Then, the bay salt is maintained on the soil in a salt farm undera controlled water temperature of 25–35° C. Only the salt, which isfreshly produced, is collected. In Korea, salt produced from a salt farmlocated in the west seashore is regarded as the best. Therefore, suchsalt having the best quality is taken by an order. The natural bay saltis introduced into a heat processor of salt in an amount of 5–15 kg andis heated at a temperature of 300–400° C. for about 1 hour. By doing so,it is possible to remove moisture and toxic arsenic from bay salt. Thusprepared bay salt has a particle size of about 100 mesh. Such baked saltis introduced again into a pulverizer to further pulverize it. Finally,the pulverized salt has a particle size of about 200 mesh.

Extraction Essence of Pine Buds

The deep green light of pine leaves results from terpene contained inthe essence, terpene being also present in main components of pineresin. Terpene contains a great amount of unsaturated fatty acids. Apine tree contains tonic agents based on terpentin, Vitamin A, VitaminC, chlorophyll, etc., including alcohols, esters, phenolic compounds andglycogenin. Among these, alcohols and esters have a function fordischarging waste products, thereby further stimulating metabolism.Vitamin A has a function for strengthening mucous membranes. Glycogeninhas a function for dropping blood sugar, and thus is useful for treatingdiabetes. Black pine trees and red pine trees contain a great amount ofVitamin C, and quercetin contained in Vitamin C is effective fordropping blood pressure. Pine tree concentrate can remove cholesterol.Hyperlipidemia, which is a disease including a increase of fat contentsin blood, results from eating habits of Europe and America related withintake of a great amount of animal fat contents, and is responsible forarteriosclerosis, cerebral infarction, heart attack and myocardialinfarction. Bathing in a pine-leaf bath is effective in coldhypersensitivity, neuralgia, blood anemia, neurogastritis, etc., becauseVitamin A, Vitamin C, palmitic acid, stearic acid, etc., can stimulateblood circulation. Extract of pine leaves used in the present inventionis prepared as follows.

Pine buds spring up freshly at early in March to May. Pine buds having alength of about 5 cm are cut and washed with water to remove dust. Thewashed pine leaves are dried and heated with hot steam. By collectingwater steam, extracted essence of pine buds can be obtained. Theextraction essence is collected to be used in the present invention.

Hitherto, each constitutional element of the composition according tothe present invention has been fully explained. Mixing of theconstitutional elements of the composition according to the presentinvention will be explained hereinafter.

0.5 to 3 parts by weight of the extraction essence of pine buds based on10 parts by weight of natural salt is introduced into a mixer. Bothmaterials are mixed for about 10 to 50 minutes. The mixture is furthermixed with 30 to 50 parts by weight of loess powder. The resultantmixture is introduced into a packing container and then tightly sealedwith a vinyl sealer so as not to leak pine aroma.

Uses and effects of the bathing composition according to the presentinvention will be explained hereinafter.

It is advisable to take a half-body bath, wherein 100–300 g of thebathing composition is added to water of about 38–40° C. filled to onehalf of the depth of a bathtub. In bathing, a part of the user's bodycorresponding to the part under the breast may be dipped in water. Afterthe user's body is covered with sweat by taking a bath for about 10–15minutes, the user may come out of the bathtub. In the case of massagingthe whole body, loess powder may be taken in an adequate amount andkneaded with water in a container. Then, the kneaded loess powder may beapplied to the whole body with a hand or a brush. After about 15minutes, users can feel tightness. In this time, users may bathe again.By doing so, it is possible for users to enjoy a natural pine-leaf bathwhile unique pine aroma is harmonized with the loess. After 10–15minutes, users may take a shower with clean water to complete thepine-leaf bath process.

When the facial pack according to the present invention is used, userspreliminarily remove facial make-up cleanly, wash their faces and applya skin toner on their faces. Next, 1–2 spoons (about 10 g) of the facialpack composition is mixed well to obtain a creamy phase and the packcomposition is applied on the face or neck. When users feel tightnessafter a lapse of about 10 minutes, the pack may be washed out by usingsoap or a foam cleanser.

Additionally, the loess powder according to the present invention may beapplied as a cosmetic material in addition to a facial pack or a bathingcomposition. For example, by adding the loess powder into a cosmeticsoap, a loess-containing soap can be obtained. More particularly, inorder to make a soap base, oils and fats are hydrolyzed into fatty acidsand glycerol and then the fatty acids are neutralized with sodiumhydroxide or sodium carbonate. To the soap base, the loess powderaccording to the present invention and, if desired, conventionaladditives such as an anti-oxidant, a coloring agent, fragrance, anirritation-alleviating agent, a builder for increasing cleansing power(for example, condensed sodium phosphate, sodium carbonate and sodiumsilicate), etc., are added and stirred for 30 minutes. The resultantmaterials are then introduced into a cooling mold by using a moldmastication method or a mechanical mastication method using net with 100mesh, pulverized more than three times, cooled and solidified. Further,the solidified materials are cut, dried for 3 days, formed into adesired shape, and then packaged as a commercial product.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

Reference will now be made in detail to the preferred embodiments of thepresent invention. The following examples are illustrative only and thescope of the present invention is not limited thereto.

EXAMPLE 1-1 Preparation of Loess Powder

Loess of good quality, which exists in a depth of 90 cm or less from thesurface in a designated loess production place, was collected. Thecollected loess was pulverized in a pulverizer. The pulverized loesspowder was distributed on a floor in a thin and uniform state and thenwas naturally dried with sunlight. The naturally dried loess powder wasintroduced into a loess-producing machine to remove foreign materialssuch as stones, and then further dried by heating with sunlight. Next,the naturally dried loess was introduced again into a loesspowder-producing machine to remove fine foreign materials and to obtainfine powder. The fine powder of loess was naturally dried by heatingwith sunlight and then was introduced again into a pulverizer to producepowder having a main particle size of 200 mesh. Then, the dried loesspowder was introduced into an earthenware container. To the earthenwarecontainer, 5 parts by weight of pine tree charcoal, 5 parts by weight ofa paulownia wood material, 5 parts by weight of alum and 5 parts byweight of ginkgo leaves, based on 100 parts by weight of the loess, wereadded. The mixture was aged at 10° C. for 6 months. Further, the loesspowder was introduced again into a pulverizer to produce powder having amain particle size of 300 mesh. Additionally, the powder was pulverizedinto a size of about 1,000 mesh so as to be used in a facial packcomposition.

EXAMPLE 1-2 Preparation of Loess Powder

Example 1-1 was repeated to prepare loess powder, except that the loesspowder was aged at 10° C. for 1 month.

EXAMPLE 1-3 Preparation of Loess Powder

Example 1-1 was repeated to prepare loess powder, except that the loesspowder was aged at 10° C. for 2 months.

EXAMPLE 1-4 Preparation of Loess Powder

Example 1-1 was repeated to prepare loess powder, except that the loesspowder was aged at 10° C. for 3 months.

EXAMPLE 1-5 Preparation of Loess Powder

Example 1-1 was repeated to prepare loess powder, except that the loesspowder was aged at 10° C. for 4 months.

EXAMPLE 1-6 Preparation of Loess Powder

Example 1-1 was repeated to prepare loess powder, except that the loesspowder was aged at 10° C. for 5 months.

COMPARATIVE EXAMPLE 1-1

Example 1-1 was repeated to prepare loess powder, except that the loesspowder was not naturally dried but mechanically dried.

COMPARATIVE EXAMPLE 1-2

Example 1-1 was repeated to prepare loess powder, except that the loesspowder was aged at 10° C. for 1 week.

COMPARATIVE EXAMPLE 1-3

Example 1-1 was repeated to prepare loess powder, except that the loesspowder was aged at 10° C. for 2 weeks.

COMPARATIVE EXAMPLE 1-4

Example 1-1 was repeated to prepare loess powder, except that the loesspowder was aged at 10° C. for 3 weeks.

COMPARATIVE EXAMPLE 1-5

Example 1-1 was repeated to prepare loess powder, except that the loesspowder was aged at 10° C. for 7 months.

EXAMPLE 2 Preparation of Natural Salt

10 kg of natural bay salt was introduced into a salt heater and heatedat 350° C. for 1 hour. Particles having a size of about 100 mesh wereobtained. 10 kg of the baked salt was introduced into a pulverizer andthen pulverized again. Final natural salt was obtained by screening witha 200-mesh sieve.

EXAMPLE 3 Preparation of Extraction Essence of Pine Buds

Pine buds appearing freshly at early in March to May and having a lengthof about 5 cm were cut and washed with water to remove dust. The washedpine leaves were dried and heated with hot steam. By collecting watersteam, extraction essence of pine buds was obtained. The extractionessence was collected to be used in this example. In this example, adistillation method with water steam was used, but a fatty oilextraction method, an expression method, etc., may be used.

EXAMPLE 4 Preparation of Bathing Composition

10 kg of the natural salt and 1.5 kg of the extraction essence of pinebuds were introduced into a mixer and mixed for about 20 minutes. Themixture was mixed with 40 kg of the loess powder having a size of 200mesh (loess powder according to Examples 1-1 to 1-6). The resultantmixture was introduced into a packing container and sealed so as not toleak pine aroma, thereby providing a final product.

EXAMPLE 5 Preparation of Facial Pack Composition

10 kg of the natural salt and 1.5 kg of the extraction essence of pinebuds were introduced into a mixer and mixed for about 20 minutes. Themixture was mixed with 40 kg of the loess powder having a size of 1,000mesh (loess powder according to Examples 1-1 to 1-6). The resultantmixture was introduced into a packing container and sealed so as not toleak pine aroma, thereby providing a final product.

COMPARATIVE EXAMPLE 2 Preparation of Bathing Composition

Example 4 was repeated to prepare a bathing composition, except that theloess powder according to Comparative Examples 1-1 to 1-5 was used.

COMPARATIVE EXAMPLE 3 Preparation of Facial Pack Composition

Example 5 was repeated to prepare a facial pack composition, except thatthe loess powder according to Comparative Examples 1-1 to 1-5 was used.

EXAMPLE 6 Experimental Example

100 persons were selected to perform an experiment by using thecompositions as described above with regard to skin irritation, wasteproduct discharging effects, moisturizing effects, healing of skintroubles, etc. The results are shown in Table 1. In table 1, each ofdesignated number represents the number of Example or ComparativeExample, from which the corresponding composition is obtained.

TABLE 1 Results Waste Skin Skin product trouble No. irritationdischarging moisturizing healing Examples 1-1 ⋆ ⋆ ⋆ ⋆ 1-2 ⋆ ⋆ ⋆ ⋆ 1-3 ⋆⊚ ⊚ ⋆ 1-4 ⋆ ⊚ ⊚ ⋆ 1-5 ⋆ ⊚ ⊚ ⋆ 1-6 ⋆ ⋆ ⋆ ⋆ Comparative Examples 1-1 X X XX 1-2 X ⋄ X ⋄ 1-3 X ⋄ X ⋄ 1-4 ◯ ⋄ X ⋄ 1-5 ◯ ◯ ⊚ ⋄ ⋆: excellent ⊚: good◯: not bad ⋄: ineffective X: very poor

As shown in Table 1, the facial pack using the loess powder according tothe present invention generates less skin irritation, shows excellentcleansing effect and moisturizing effect, and is effective for healingdermatitis, in contrast with conventional facial pack compositions usingconventional loess that is not aged under conditions according to thepresent invention.

As can be seen from the foregoing, the bathing composition according tothe present invention has advantages in that it makes a user feelrefreshed due to the pine aroma; it can prevent arteriosclerosis and fataccumulation in the human body by virtue of the terpene which containsunsaturated fatty acids; it can supplement anions by virtue of naturalsalt; it is useful for the treatment of maturating diseases such asdermatophytosis and dermatitis; and in that it stimulates metabolism andthe human blood circulation system by the far infrared ray-emittingactivity of loess. Additionally, the bathing composition according tothe present invention is an environmental-friendly composition, becausethe loess-containing water discharged after bathing flows into adraining path, thereby purifying a contaminated river and recoveringcontaminated soil. Further, the facial pack according to the presentinvention has excellent moisturizing effect, generates less skinirritation and can removes sebaceous matters from the user's facialskin, thereby maintaining skin in a clean state, irrespective of oilyand dry skin.

Although a preferred embodiment of the present invention has beendescribed for illustrative purposes, those skilled in the art willappreciate that various modifications, additions and substitutions arepossible, without departing from the scope and spirit of the inventionas disclosed in the accompanying claims.

1. A method for preparing a bathing composition, comprising the stepsof: (a) pulverizing natural loess that is completely sun-dried into asize of 200–250 mesh, introducing the pulverized loess in an earthenwarecontainer together with pine tree charcoal, a paulownia wood material,alum and ginkgo leaves, sealing the earthenware container and aging thematerials at a temperature of −5 to 40° C. for 1 month to 6 months toproduce a loess containing powder; (b) heating natural bay salt at atemperature of about 300–400° C. for 1–2 hours; (c) drying pine buds,heating them with steam and collecting water steam to extract adistilled essence of pine buds; (d) introducing the bay salt and thedistilled essence of pine buds into a mixer and mixing them for 10–50minutes, wherein the amount of the bay salt is 10 parts by weight per30–50 parts by weight of the loess and the amount of the distilledessence of pine buds is 0.5–3 parts by weight per 30–50 parts by weightof the loess; and (e) mixing the mixture obtained from step (d) withsaid 30–50 parts by weight of the loess containing powder and agitatingthem in a kneader for 10–50 minutes.
 2. A method for preparing a facialpack composition, comprising the steps of: (a) pulverizing natural loessthat is completely sun-dried into a size of about 1,000 mesh,introducing the pulverized loess in an earthenware container togetherwith pine tree charcoal, a paulownia wood material, alum and ginkgoleaves, sealing the earthenware container and aging the materials at atemperature of −5 to 40° C. for 1 month to 6 months to produce a loesscontaining powder; (b) heating natural bay salt at a temperature ofabout 300–400° C. for 1–2 hours; (c) drying pine buds, heating them withsteam and collecting water steam to to extract a distilled essence ofpine buds; (d) introducing the bay salt and the distilled essence ofpine buds into a mixer and mixing them for 10–50 minutes, wherein theamount of the bay salt is 10 parts by weight per 30–50 parts by weightof the loess and the amount of the distilled essence of pine buds is0.5–3 parts by weight per 30–50 parts by weight of the loess; and (e)mixing the mixture obtained from step (d) with said 30–50 parts byweight of the loess containing powder and agitating them in a kneaderfor 10–50 minutes.